Beckhoff CX5140-0121 Embedded PC

The Beckhoff CX5140-0121 is a compact, high-performance Embedded PC designed for industrial control, automation, and motion applications. Equipped with a 1.91 GHz Intel Atom® E3845 quad-core processor, this fanless system offers reliable multi-core processing in a DIN rail-mountable format with low power consumption.

It features 4 GB DDR3 RAM, dual Gigabit Ethernet ports, four USB 2.0 ports, a DVI-I display interface, and auto-recognition for either E-bus or K-bus I/O. The CX5140-0121 supports various operating systems, including multiple versions of Windows IoT and TwinCAT/BSD, and runs both TwinCAT 2 and TwinCAT 3 runtimes. Ideal for complex PLC and motion tasks, it also includes an integrated 1-second UPS for data security.

Certified for use in harsh industrial environments, this model meets CE, UL, DNV GL standards and offers optional ATEX and IECEx approvals for hazardous zones.

Technical Specifications

Manufacturer: Beckhoff
Part Number: CX5140-0121 Beckhoff
Product Type: Embedded PC / Industrial Controller
Series: CX5100

Processor & Memory

Processor: Intel Atom® E3845, 1.91 GHz, Quad-Core (TC3: 50)
Main Memory: 4 GB DDR3 RAM (not expandable)
Flash Memory: Slot for CFast card and microSD card (cards not included)
Persistent Memory: Integrated 1-second UPS (1 MB on CFast card)

Operating System & Software

Operating System: Windows Embedded Compact 7 / Windows Embedded Standard 7 / Windows 10 IoT Enterprise 2016, 2019, 2021 LTSC / TwinCAT/BSD
Control Software: TwinCAT 2 runtime and TwinCAT 3 runtime (XAR)

Interfaces & Connectivity

Ethernet: 2 x RJ45 (10/100/1000 Mbit/s)
USB: 4 x USB 2.0
Display: 1 x DVI-I
Optional Interface: 1 x configurable port
I/O Interface: E-bus or K-bus (auto-detect)
Diagnostic LEDs: Power, Flash Access, TC Status, 2 x Bus Status
Clock: Internal battery-backed RTC (exchangeable)

Power & Environmental

Power Supply: 24 V DC (-15% / +20%)
Current Supply (E-bus/K-bus): 2 A
Max. Power Consumption: 16 W (23 W with UPS load)
Max. I/O Bus Power: 10 W (5 V / 2 A)
Cooling: Fanless, passive convection
Operating Temperature: -25…+60°C
Storage Temperature: -40…+85°C
Humidity: 95% RH, non-condensing
Protection Class: IP20
EMC Standards: EN 61000-6-2 / EN 61000-6-4
Vibration/Shock Resistance: EN 60068-2-6 / EN 60068-2-27

Mechanical Specifications

Mounting: DIN Rail
Dimensions (W x H x D): 142 mm x 100 mm x 92 mm
Weight: Approx. 1095 g

Approvals & Markings

Certifications: CE, UL, DNV GL
Optional Certifications (with CX2900-0107): ATEX, IECEx, cFMus
Ex Marking:
– ATEX: II 3 G Ex nA IIC T4 Gc / II 3 D Ex tc IIIC T135 °C Dc
– IECEx: Ex nA IIC T4 Gc / Ex tc IIIC T135 °C Dc
– cFMus: Class I, Division 2, Groups A-D; Class I, Zone 2, AEx ec IIC T4 Gc

Key Features

✅ Intel Atom E3845 Quad-Core CPU: Industrial-grade performance with low power use.

✅ DIN Rail Mountable: Compact, space-saving design.

✅ Flexible OS & Runtime: Supports TwinCAT 2/3 and Windows IoT Enterprise.

✅ Comprehensive Interfaces: Dual Ethernet, USB, DVI-I, and optional ports.

✅ Fanless Operation: Reliable performance in extreme conditions.

✅ Global Certifications: CE, UL, with optional ATEX and IECEx for hazardous zones.

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Engineered for high-end industrial automation with robust I/O and platform flexibility.

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